//
//  UserGroup.m
//  CoolTennisBall
//
//  Created by Coollang on 16/8/25.
//  Copyright © 2016年 CoolLang. All rights reserved.
//

#import "UserGroup.h"

@implementation UserGroup
- (NSMutableArray *)items {
    if (_items == nil) {
        _items = [NSMutableArray array];
    }
    return _items;
}
@end
